Patents Assigned to NGK Insulators, Ltd. and Mitsubishi Heavy Industries, Ltd.
  • Boiler tube protector and a method for attaching such protector to a boiler tube
    Patent number: 6136117
    Abstract: A method of attaching a boiler tube protectors having a cylindrical or semi-cylindrical shape around an outer peripheral face of a boiler tube with mortar, which boiler tube protectors, are a plurality of ceramic bodies closely arranged along their parting planes, wherein the parting planes includes means for restraining slippage of each of the ceramic bodies along the parting planes.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: October 24, 2000
    Assignee: NGK Insulators, Ltd. and Mitsubishi Heavy Industries, Ltd.
    Inventors: Toshio Shibata, Shigeo Ito, Kazuhiro Mizuno, Yasuhiro Terashima, Yuji Nakagawa, Keita Inoue, Norihiko Orita, Tetsuo Takahashi, Kazuo Yamamura